Valve cover



FIG. 1 is a top plan view of the valve cover showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof; and

FIG. 5 is a rear elevational view thereof.

The valve is shown in broken lines for illustrative purposes only. 

The ornamental design for a valve cover, as shown and described. 